JSTests/test262/test/language/statements/class/dstr/private-meth-dflt-obj-ptrn-prop-ary.js

// This file was procedurally generated from the following sources:
// - src/dstr-binding/obj-ptrn-prop-ary.case
// - src/dstr-binding/default/cls-decl-private-meth-dflt.template
/*---
description: Object binding pattern with "nested" array binding pattern not using initializer (private class expression method (default parameter))
esid: sec-runtime-semantics-bindingclassdeclarationevaluation
features: [class, class-methods-private, destructuring-binding, default-parameters]
flags: [generated]
info: |
    ClassDeclaration : class BindingIdentifier ClassTail

    1. Let className be StringValue of BindingIdentifier.
    2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
       argument className.
    [...]

    14.5.14 Runtime Semantics: ClassDefinitionEvaluation

    21. For each ClassElement m in order from methods
        a. If IsStatic of m is false, then
           i. Let status be the result of performing
              PropertyDefinitionEvaluation for m with arguments proto and
              false.
        [...]

    14.3.8 Runtime Semantics: DefineMethod

    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }

    [...]
    6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
       scope, strict). If functionPrototype was passed as a parameter then pass its
       value as the functionPrototype optional argument of FunctionCreate.
    [...]

    9.2.1 [[Call]] ( thisArgument, argumentsList)

    [...]
    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
    [...]

    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )

    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
    [...]

    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)

    [...]
    23. Let iteratorRecord be Record {[[iterator]]:
        CreateListIterator(argumentsList), [[done]]: false}.
    24. If hasDuplicates is true, then
        [...]
    25. Else,
        b. Let formalStatus be IteratorBindingInitialization for formals with
           iteratorRecord and env as arguments.
    [...]

    13.3.3.7 Runtime Semantics: KeyedBindingInitialization

    [...]
    3. If Initializer is present and v is undefined, then
       [...]
    4. Return the result of performing BindingInitialization for BindingPattern
       passing v and environment as arguments.
---*/

var callCount = 0;
class C {
  #method({ w: [x, y, z] = [4, 5, 6] } = { w: [7, undefined, ] }) {
    assert.sameValue(x, 7);
    assert.sameValue(y, undefined);
    assert.sameValue(z, undefined);

    assert.throws(ReferenceError, function() {
      w;
    });
    callCount = callCount + 1;
  }

  get method() {
    return this.#method;
  }
};

new C().method();
assert.sameValue(callCount, 1, 'method invoked exactly once');